In general, the common types of batch heads are a word and a cross. But the batch type is far more than these two. There are also star type, hexagon type, sleeve and so on. In short, we can customize easy-to-use and durable bits according to customer needs.
The power source of the bit comes from an electric screwdriver or a pneumatic screwdriver. In the industry, there are two sizes of batch heads, one is the metric system, and it is often said that the unit is mm. There is also the imperial system, which is in inches, such as 1/4, 3/16, this number multiplied by 25 is the metric size.
What bit is durable? The bit of a high-quality screwdriver is made of spring steel with relatively high hardness. It is hard but not brittle, and the hard middle belt is tough. So the hardness is usually around HRC58-60.
Bits are suitable for use in engineering, machinery, household appliance repairs, electric and pneumatic tools, and factory production lines. Bits are also divided into conventional standard and non-standard. For Apple mobile phones or watches, in order to prevent their products from being easily disassembled, special screws are used, so special bites must be customized to screw these screws.